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source: codes/icosagcm/branches/SATURN_DYNAMICO/LMDZ.COMMON/libf/phystd/convadj.F @ 227

Last change on this file since 227 was 227, checked in by milmd, 10 years ago
Last LMDZ version (1315) with OpenMP directives and other stuff
File size: 11.4 KB

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1	subroutine convadj(ngrid,nlay,nq,ptimestep,
2	& pplay,pplev,ppopsk,
3	& pu,pv,ph,pq,
4	& pdufi,pdvfi,pdhfi,pdqfi,
5	& pduadj,pdvadj,pdhadj,
6	& pdqadj)
7
8	USE tracer_h
9
10	implicit none
11
12	!==================================================================
13	!
14	! Purpose
15	! -------
16	! Calculates dry convective adjustment. If one tracer is CO2,
17	! we take into account the molecular mass variation (e.g. when
18	! CO2 condenses) to trigger convection (F. Forget 01/2005)
19	!
20	! Authors
21	! -------
22	! Original author unknown.
23	! Modif. 2005 by F. Forget.
24	!
25	!==================================================================
26
27	! ------------
28	! Declarations
29	! ------------
30
31	!#include "dimensions.h"
32	!#include "dimphys.h"
33	#include "comcstfi.h"
34	#include "callkeys.h"
35
36
37	! Arguments
38	! ---------
39
40	INTEGER ngrid,nlay
41	REAL ptimestep
42	REAL ph(ngrid,nlay),pdhfi(ngrid,nlay),pdhadj(ngrid,nlay)
43	REAL pplay(ngrid,nlay),pplev(ngrid,nlay+1),ppopsk(ngrid,nlay)
44	REAL pu(ngrid,nlay),pdufi(ngrid,nlay),pduadj(ngrid,nlay)
45	REAL pv(ngrid,nlay),pdvfi(ngrid,nlay),pdvadj(ngrid,nlay)
46
47	! Tracers
48	integer nq
49	real pq(ngrid,nlay,nq), pdqfi(ngrid,nlay,nq)
50	real pdqadj(ngrid,nlay,nq)
51
52
53	! Local
54	! -----
55
56	INTEGER ig,i,l,l1,l2,jj
57	INTEGER jcnt, jadrs(ngrid)
58
59	REAL sig(nlay+1),sdsig(nlay),dsig(nlay)
60	REAL zu(ngrid,nlay),zv(ngrid,nlay)
61	REAL zh(ngrid,nlay)
62	REAL zu2(ngrid,nlay),zv2(ngrid,nlay)
63	REAL zh2(ngrid,nlay), zhc(ngrid,nlay)
64	REAL zhm,zsm,zdsm,zum,zvm,zalpha,zhmc
65
66	! Tracers
67	INTEGER iq,ico2
68	save ico2
69	!$OMP THREADPRIVATE(ico2)
70	REAL zq(ngrid,nlay,nq), zq2(ngrid,nlay,nq)
71	REAL zqm(nq),zqco2m
72	real m_co2, m_noco2, A , B
73	save A, B
74	!$OMP THREADPRIVATE(A,B)
75
76	real mtot1, mtot2 , mm1, mm2
77	integer l1ref, l2ref
78	LOGICAL vtest(ngrid),down,firstcall
79	save firstcall
80	data firstcall/.true./
81	!$OMP THREADPRIVATE(firstcall)
82
83	! for conservation test
84	real masse,cadjncons
85
86	EXTERNAL SCOPY
87
88	! --------------
89	! Initialisation
90	! --------------
91
92	IF (firstcall) THEN
93	ico2=0
94	if (tracer) then
95	! Prepare Special treatment if one of the tracers is CO2 gas
96	do iq=1,nq
97	if (noms(iq).eq."co2") then
98	print*,'dont go there'
99	stop
100	ico2=iq
101	m_co2 = 44.01E-3 ! CO2 molecular mass (kg/mol)
102	m_noco2 = 33.37E-3 ! Non condensible mol mass (kg/mol)
103	! Compute A and B coefficient use to compute
104	! mean molecular mass Mair defined by
105	! 1/Mair = q(ico2)/m_co2 + (1-q(ico2))/m_noco2
106	! 1/Mair = A*q(ico2) + B
107	A =(1/m_co2 - 1/m_noco2)
108	B=1/m_noco2
109	end if
110	enddo
111	endif
112	firstcall=.false.
113	ENDIF ! of IF (firstcall)
114
115	DO l=1,nlay
116	DO ig=1,ngrid
117	zh(ig,l)=ph(ig,l)+pdhfi(ig,l)*ptimestep
118	zu(ig,l)=pu(ig,l)+pdufi(ig,l)*ptimestep
119	zv(ig,l)=pv(ig,l)+pdvfi(ig,l)*ptimestep
120	ENDDO
121	ENDDO
122
123	if(tracer) then
124	DO iq =1, nq
125	DO l=1,nlay
126	DO ig=1,ngrid
127	zq(ig,l,iq)=pq(ig,l,iq)+pdqfi(ig,l,iq)*ptimestep
128	ENDDO
129	ENDDO
130	ENDDO
131	end if
132
133	CALL scopy(ngrid*nlay,zh,1,zh2,1)
134	CALL scopy(ngrid*nlay,zu,1,zu2,1)
135	CALL scopy(ngrid*nlay,zv,1,zv2,1)
136	CALL scopy(ngridnlaynq,zq,1,zq2,1)
137
138	! -----------------------------
139	! Detection of unstable columns
140	! -----------------------------
141	! If ph(above) < ph(below) we set vtest=.true.
142
143	DO ig=1,ngrid
144	vtest(ig)=.false.
145	ENDDO
146
147	if (ico2.ne.0) then
148	! Special case if one of the tracers is CO2 gas
149	DO l=1,nlay
150	DO ig=1,ngrid
151	zhc(ig,l) = zh2(ig,l)(Azq2(ig,l,ico2)+B)
152	ENDDO
153	ENDDO
154	else
155	CALL scopy(ngrid*nlay,zh2,1,zhc,1)
156	end if
157
158	! Find out which grid points are convectively unstable
159	DO l=2,nlay
160	DO ig=1,ngrid
161	IF(zhc(ig,l).LT.zhc(ig,l-1)) vtest(ig)=.true.
162	ENDDO
163	ENDDO
164
165	! Make a list of them
166	jcnt=0
167	DO ig=1,ngrid
168	IF(vtest(ig)) THEN
169	jcnt=jcnt+1
170	jadrs(jcnt)=ig
171	ENDIF
172	ENDDO
173
174
175	! ---------------------------------------------------------------
176	! Adjustment of the "jcnt" unstable profiles indicated by "jadrs"
177	! ---------------------------------------------------------------
178
179	DO jj = 1, jcnt ! loop on every convective grid point
180
181	i = jadrs(jj)
182
183	! Calculate sigma in this column
184	DO l=1,nlay+1
185	sig(l)=pplev(i,l)/pplev(i,1)
186
187	ENDDO
188	DO l=1,nlay
189	dsig(l)=sig(l)-sig(l+1)
190	sdsig(l)=ppopsk(i,l)*dsig(l)
191	ENDDO
192	l2 = 1
193
194	! Test loop upwards on l2
195
196	DO
197	l2 = l2 + 1
198	IF (l2 .GT. nlay) EXIT
199	IF (zhc(i, l2) .LT. zhc(i, l2-1)) THEN
200
201	! l2 is the highest level of the unstable column
202
203	l1 = l2 - 1
204	l = l1
205	zsm = sdsig(l2)
206	zdsm = dsig(l2)
207	zhm = zh2(i, l2)
208	if(ico2.ne.0) zqco2m = zq2(i,l2,ico2)
209
210	! Test loop downwards
211
212	DO
213	zsm = zsm + sdsig(l)
214	zdsm = zdsm + dsig(l)
215	zhm = zhm + sdsig(l) * (zh2(i, l) - zhm) / zsm
216	if(ico2.ne.0) then
217	zqco2m =
218	& zqco2m + dsig(l) * (zq2(i,l,ico2) - zqco2m) / zdsm
219	zhmc = zhm(Azqco2m+B)
220	else
221	zhmc = zhm
222	end if
223
224	! do we have to extend the column downwards?
225
226	down = .false.
227	IF (l1 .ne. 1) then !-- and then
228	IF (zhmc .lt. zhc(i, l1-1)) then
229	down = .true.
230	END IF
231	END IF
232
233	! this could be a problem...
234
235	if (down) then
236
237	l1 = l1 - 1
238	l = l1
239
240	else
241
242	! can we extend the column upwards?
243
244	if (l2 .eq. nlay) exit
245
246	if (zhc(i, l2+1) .ge. zhmc) exit
247
248	l2 = l2 + 1
249	l = l2
250
251	end if
252
253	enddo
254
255	! New constant profile (average value)
256
257
258	zalpha=0.
259	zum=0.
260	zvm=0.
261	do iq=1,nq
262	zqm(iq) = 0.
263	end do
264	DO l = l1, l2
265	if(ico2.ne.0) then
266	zalpha=zalpha+
267	& ABS(zhc(i,l)/(A+Bzqco2m) -zhm)dsig(l)
268	else
269	zalpha=zalpha+ABS(zh2(i,l)-zhm)*dsig(l)
270	endif
271	zh2(i, l) = zhm
272	! modifs by RDW !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
273	zum=zum+dsig(l)*zu2(i,l)
274	zvm=zvm+dsig(l)*zv2(i,l)
275	! zum=zum+dsig(l)*zu(i,l)
276	! zvm=zvm+dsig(l)*zv(i,l)
277	do iq=1,nq
278	zqm(iq) = zqm(iq)+dsig(l)*zq2(i,l,iq)
279	! zqm(iq) = zqm(iq)+dsig(l)*zq(i,l,iq)
280	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
281
282	! to conserve tracers/ KE, we must calculate zum, zvm and zqm using
283	! the up-to-date column values. If we do not do this, there are cases
284	! where convection stops at one level and starts at the next where we
285	! can break conservation of stuff (particularly tracers) significantly.
286
287	end do
288	ENDDO
289	zalpha=zalpha/(zhm*(sig(l1)-sig(l2+1)))
290	zum=zum/(sig(l1)-sig(l2+1))
291	zvm=zvm/(sig(l1)-sig(l2+1))
292	do iq=1,nq
293	zqm(iq) = zqm(iq)/(sig(l1)-sig(l2+1))
294	end do
295
296	IF(zalpha.GT.1.) THEN
297	zalpha=1.
298	ELSE
299	! IF(zalpha.LT.0.) STOP
300	IF(zalpha.LT.1.e-4) zalpha=1.e-4
301	ENDIF
302
303	DO l=l1,l2
304	zu2(i,l)=zu2(i,l)+zalpha*(zum-zu2(i,l))
305	zv2(i,l)=zv2(i,l)+zalpha*(zvm-zv2(i,l))
306	do iq=1,nq
307	! zq2(i,l,iq)=zq2(i,l,iq)+zalpha*(zqm(iq)-zq2(i,l,iq))
308	zq2(i,l,iq)=zqm(iq)
309	end do
310	ENDDO
311	if (ico2.ne.0) then
312	DO l=l1, l2
313	zhc(i,l) = zh2(i,l)(Azq2(i,l,ico2)+B)
314	ENDDO
315	end if
316
317
318	l2 = l2 + 1
319
320	END IF ! End of l1 to l2 instability treatment
321	! We now continue to test from l2 upwards
322
323	ENDDO ! End of upwards loop on l2
324
325
326	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
327	! check conservation
328	cadjncons=0.0
329	if(water)then
330	do l = 1, nlay
331	masse = (pplev(i,l) - pplev(i,l+1))/g
332	iq = igcm_h2o_vap
333	cadjncons = cadjncons +
334	& masse*(zq2(i,l,iq)-zq(i,l,iq))/ptimestep
335	end do
336	endif
337
338	if(cadjncons.lt.-1.e-6)then
339	print*,'convadj has just crashed...'
340	print*,'i = ',i
341	print*,'l1 = ',l1
342	print*,'l2 = ',l2
343	print*,'cadjncons = ',cadjncons
344	do l = 1, nlay
345	print*,'dsig = ',dsig(l)
346	end do
347	do l = 1, nlay
348	print*,'dsig = ',dsig(l)
349	end do
350	do l = 1, nlay
351	print*,'sig = ',sig(l)
352	end do
353	do l = 1, nlay
354	print*,'pplay(ig,:) = ',pplay(i,l)
355	end do
356	do l = 1, nlay+1
357	print*,'pplev(ig,:) = ',pplev(i,l)
358	end do
359	do l = 1, nlay
360	print*,'ph(ig,:) = ',ph(i,l)
361	end do
362	do l = 1, nlay
363	print*,'ph(ig,:) = ',ph(i,l)
364	end do
365	do l = 1, nlay
366	print*,'ph(ig,:) = ',ph(i,l)
367	end do
368	do l = 1, nlay
369	print*,'zh(ig,:) = ',zh(i,l)
370	end do
371	do l = 1, nlay
372	print*,'zh2(ig,:) = ',zh2(i,l)
373	end do
374	do l = 1, nlay
375	print*,'zq(ig,:,vap) = ',zq(i,l,igcm_h2o_vap)
376	end do
377	do l = 1, nlay
378	print*,'zq2(ig,:,vap) = ',zq2(i,l,igcm_h2o_vap)
379	end do
380	print*,'zqm(vap) = ',zqm(igcm_h2o_vap)
381	print*,'jadrs=',jadrs
382
383	call abort
384	endif
385	!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
386
387
388	ENDDO
389
390	DO l=1,nlay
391	DO ig=1,ngrid
392	pdhadj(ig,l)=(zh2(ig,l)-zh(ig,l))/ptimestep
393	pduadj(ig,l)=(zu2(ig,l)-zu(ig,l))/ptimestep
394	pdvadj(ig,l)=(zv2(ig,l)-zv(ig,l))/ptimestep
395	ENDDO
396	ENDDO
397
398	if(tracer) then
399	do iq=1, nq
400	do l=1,nlay
401	DO ig=1,ngrid
402	pdqadj(ig,l,iq)=(zq2(ig,l,iq)-zq(ig,l,iq))/ptimestep
403	end do
404	end do
405	end do
406	end if
407
408
409	! output
410	! if (ngrid.eq.1) then
411	! ig=1
412	! iq =1
413	! write(,)'**** l, pq(ig,l,iq),zq(ig,l,iq),zq2(ig,l,iq)'
414	! do l=nlay,1,-1
415	! write(,) l, pq(ig,l,iq),zq(ig,l,iq),zq2(ig,l,iq)
416	! end do
417	! end if
418
419
420	return
421	end

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